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   1  <?php
   2  
   3  /* Functions missing from older PHP versions */
   4  
   5  
   6  /* Added in PHP 4.2.0 */
   7  
   8  if (!function_exists('floatval')) {
   9  	function floatval($string) {
  10          return ((float) $string);
  11      }
  12  }
  13  
  14  if (!function_exists('is_a')) {
  15  	function is_a($object, $class) {
  16          // by Aidan Lister <aidan@php.net>
  17          if (get_class($object) == strtolower($class)) {
  18              return true;
  19          } else {
  20              return is_subclass_of($object, $class);
  21          }
  22      }
  23  }
  24  
  25  if (!function_exists('ob_clean')) {
  26  	function ob_clean() {
  27          // by Aidan Lister <aidan@php.net>
  28          if (@ob_end_clean()) {
  29              return ob_start();
  30          }
  31          return false;
  32      }
  33  }
  34  
  35  
  36  /* Added in PHP 4.3.0 */
  37  
  38  function printr($var, $do_not_echo = false) {
  39      // from php.net/print_r user contributed notes
  40      ob_start();
  41      print_r($var);
  42      $code =  htmlentities(ob_get_contents());
  43      ob_clean();
  44      if (!$do_not_echo) {
  45          echo "<pre>$code</pre>";
  46      }
  47      ob_end_clean();
  48      return $code;
  49  }
  50  
  51  /* compatibility with PHP versions older than 4.3 */
  52  if ( !function_exists('file_get_contents') ) {
  53  	function file_get_contents( $file ) {
  54          $file = file($file);
  55          return !$file ? false : implode('', $file);
  56      }
  57  }
  58  
  59  if (!defined('CASE_LOWER')) {
  60          define('CASE_LOWER', 0);
  61  }
  62  
  63  if (!defined('CASE_UPPER')) {
  64          define('CASE_UPPER', 1);
  65  }
  66  
  67  
  68  /**
  69   * Replace array_change_key_case()
  70   *
  71   * @category    PHP
  72   * @package     PHP_Compat
  73   * @link        http://php.net/function.array_change_key_case
  74   * @author      Stephan Schmidt <schst@php.net>
  75   * @author      Aidan Lister <aidan@php.net>
  76   * @version     $Revision: 6309 $
  77   * @since       PHP 4.2.0
  78   * @require     PHP 4.0.0 (user_error)
  79   */
  80  if (!function_exists('array_change_key_case')) {
  81  		function array_change_key_case($input, $case = CASE_LOWER)
  82          {
  83                  if (!is_array($input)) {
  84                          user_error('array_change_key_case(): The argument should be an array',
  85                                  E_USER_WARNING);
  86                          return false;
  87                  }
  88  
  89                  $output   = array ();
  90                  $keys     = array_keys($input);
  91                  $casefunc = ($case == CASE_LOWER) ? 'strtolower' : 'strtoupper';
  92  
  93                  foreach ($keys as $key) {
  94                          $output[$casefunc($key)] = $input[$key];
  95                  }
  96  
  97                  return $output;
  98          }
  99  }
 100  
 101  if (!function_exists('http_build_query')) {
 102  	function http_build_query($data, $prefix=null, $sep=null) {
 103          return _http_build_query($data, $prefix, $sep);
 104      }
 105  }
 106  
 107  // from php.net (modified by Mark Jaquith to behave like the native PHP5 function)
 108  function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) {
 109      $ret = array();
 110  
 111      foreach ( (array) $data as $k => $v ) {
 112          if ( $urlencode)
 113              $k = urlencode($k);
 114          if ( is_int($k) && $prefix != null )
 115              $k = $prefix.$k;
 116          if ( !empty($key) )
 117              $k = $key . '%5B' . $k . '%5D';
 118          if ( $v === NULL )
 119              continue;
 120          elseif ( $v === FALSE )
 121              $v = '0';
 122  
 123          if ( is_array($v) || is_object($v) )
 124              array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));
 125          elseif ( $urlencode )
 126              array_push($ret, $k.'='.urlencode($v));
 127          else
 128              array_push($ret, $k.'='.$v);
 129      }
 130  
 131      if ( NULL === $sep )
 132          $sep = ini_get('arg_separator.output');
 133  
 134      return implode($sep, $ret);
 135  }
 136  
 137  if ( !function_exists('_') ) {
 138      function _($string) {
 139          return $string;
 140      }
 141  }
 142  
 143  // Added in PHP 5.0
 144  if (!function_exists('stripos')) {
 145  	function stripos($haystack, $needle, $offset = 0) {
 146          return strpos(strtolower($haystack), strtolower($needle), $offset);
 147      }
 148  }
 149  
 150  // Added in PHP 4.3.0?
 151  if (!defined('IMAGETYPE_GIF'))
 152      define('IMAGETYPE_GIF', 1);
 153  
 154  if (!defined('IMAGETYPE_JPEG'))
 155      define('IMAGETYPE_JPEG', 2);
 156  
 157  if (!defined('IMAGETYPE_PNG'))
 158      define('IMAGETYPE_PNG', 3);
 159  
 160  
 161  ?>